<template>
  <div id="app">
    <el-row class="box">
      <el-col :span="8">
        <div class="bg-yellow"></div>
      </el-col>
      <el-col :span="8">
        <div class="bg-red"></div>
      </el-col>
      <el-col :span="8">
        <div class="bg-yellow"></div>
      </el-col>
    </el-row>
  </div>
</template>

<script>

export default {
  name: 'App',
  components: {
  }
}
</script>
<style>
*{
  margin:0;
  padding:0;
}
</style>

<style>
.box{
  width: 100%;
  height: 100vh;
}
.bg-yellow{
  width: 100%;
  height: 100vh;
  background: yellow;
}
.bg-red{
  width: 100%;
  height: 100vh;
  background: red;
}
</style>
